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Annealing-induced Changes in the Electronic and Structural Properties of ZnTe Substrates

Published online by Cambridge University Press:  31 January 2011

J. A. Garcia ,
A. Remón ,
V. Munñz  and
R. Triboulet
J. A. Garcia
Affiliation:
Departamento de Física Aplicada II, Facultad de Ciencias, Universidad del País Vasco, Lejona (Vizcaya) Spain
A. Remón
Affiliation:
Departamento de Física Aplicada II, Facultad de Ciencias, Universidad del País Vasco, Lejona (Vizcaya) Spain
V. Munñz
Affiliation:
Departamento de Física Aplicada and Instituto de Ciencia de Materiales de la Universitat de València (ICMUV), c/Doctor Moliner No. 50, E-46100 Burjassot (València), Spain
R. Triboulet
Affiliation:
Centre National de la Recherche Scientifique, Laboratoire de Physique des Solides de Bellevue (LPSB/CNRS), 1 Place Aristide Briand, F-92195, Meudon, France
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Abstract

The aim of this study is to demonstrate that the electronic and structural properties of II–VI substrates, here ZnTe, can be dramatically affected by thermal heating at temperatures in the range of those typically used in the epitaxial metalorganic chemical vapor deposition processes. Photoluminescence response shows that annealing at these temperatures produces a reduction of the sample crystalline quality, decreasing the free exciton emission relative to the deep level related one. Some factors, like the change in the charge and stress state of dislocations, Cu diffusion, and oxygen incorporation, could be responsible for changes in the substrate properties, which can produce stresses and contamination in the deposited sample.

Type
Articles
Information
Journal of Materials Research , Volume 15 , Issue 7 , July 2000 , pp. 1612 - 1616
Copyright
Copyright © Materials Research Society 2000

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References

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